The difference is when the finish goes on the wood. Site finished hardwood floors arrive as raw, unfinished wood, get installed, and are then sanded, stained, and sealed inside your house. Prefinished hardwood flooring is sanded, stained, and coated at the mill, so the boards arrive sealed and the floor is walkable the day it is installed. Site finished floors give you a flat, seamless floor and unlimited custom color; prefinished flooring gives you a tougher factory finish, almost no dust, and a much shorter project. Below, the team at Sunrise Hardwood breaks down how prefinished hardwood flooring and site finished flooring compare, so you can choose the right hardwood floor for your home.
What Are Site Finished Hardwood Floors?
Site finished hardwood flooring starts as unfinished wood. The boards are milled and sold raw, then installed in your house before any color or coating touches them. The finishing work happens on the job site, in this order:
Installation — raw boards of unfinished flooring are nailed or glued down and the floor is left bare.
Sanding — the entire floor is sanded flat as one continuous surface.
Staining — your stain is mixed and applied on site, so the color is custom.
Sealing — multiple coats of finish are applied to the bare floor, with cure time between each.
This is the traditional way hardwood floors were built for most of the last century, and it is still the method we use for historic restorations across the Treasure Valley. Unfinished hardwood is also what you need when you are blending new red oak into an existing floor and the color has to match exactly. Because the whole floor is sanded as one surface, a site finished floor reads as a single, uniform finish rather than a set of individual boards — and any floor built this way can be sanded and refinished again decades later.
What Is Prefinished Hardwood Flooring?
Prefinished hardwood flooring is finished at the factory before it ever reaches your house. Each board runs through a controlled line where stain and multiple layers of coating are applied and cured, then arrives boxed, sealed, and ready to install. That changes several things:
Cure method — UV lights harden the finish in seconds, far beyond anything that can cure in a living room.
Wear layer — the factory applied finish is loaded with aluminum oxide, which resists scratches far better than a site applied coating.
Timeline — there is no on site finishing step, so the floor is done when the last board goes down.
Daily use — most prefinished hardwood floors hold furniture and area rugs immediately. Being able to use your floors immediately is the reason many homeowners pick prefinished hardwood flooring, and the surface is low maintenance from day one.
Sunrise Hardwood carries 3/4″ solid prefinished flooring as well as engineered prefinished hardwood flooring. Pre-finished hardwood is the practical choice when you are moving into a new house on a deadline, and pre-finished flooring in a wide plank looks identical to a site finished floor from standing height. In practice, most of the hardwood floors we install in new construction are pre-finished.
Finish Durability: Aluminum Oxide vs. On Site Finishing
This is where factory finished flooring wins outright. The factory finish on most prefinished hardwood is a urethane loaded with aluminum oxide, a ceramic abrasive that makes the wear layer extremely hard, and manufacturers back it with warranties of 25 years or more. Site applied finishes on unfinished hardwood cure in open air, so they never reach the same hardness and are less durable under heavy traffic. A well-installed site finished floor with three coats of a quality waterborne or oil-modified sealer is still durable and beautiful — it simply carries a shorter warranty, usually three to five years, and will show scratches a little sooner in high traffic areas. Neither floor is scratch proof; grit, dogs, and dining chairs leave scratches on any wood floor eventually, and both types of hardwood hide those scratches better in a matte sheen than a gloss. What the harder factory finish really buys you is time before the first refinish, and fewer visible scratches in the meantime.
Installation Time, Dust, and Fumes
The disruption to your house is the practical difference most people notice:
Pre-finished installation — boards go down, trim goes on, and the floor is usable the same day, with no sanding at all.
Site finished installation — plan on roughly four to seven days for a typical main floor, since we sand the floor flat on site, stain it, and apply multiple coats with drying time between each.
Sanding dust — prefinished work creates almost none; modern dust-containment sanders capture the great majority on a site finished job, though some fine dust still settles.
Odor — a factory finish has none, while oil-based sealers put off strong fumes for a day or two. Waterborne finishes cut the odor sharply and dry faster in an occupied house.
Beveled Edges vs. a Flat, Smooth Floor
Look closely at a prefinished floor and you will see a small groove where each board meets the next. Those beveled edges exist because factory boards cannot be sanded flat after installation, so the mill eases the edges to hide tiny height differences between planks. Some homeowners like the definition beveled edges give a wide-plank floor; others do not, since you can feel the ridges barefoot and the grooves trap grit that has to be vacuumed rather than wiped. Site finished hardwood has no bevels at all — sanding the entire floor after installation produces one continuous, table-flat surface with a smooth coating from wall to wall, and for many of our customers that seamless smooth finish is the whole reason they choose site finished floors.
Custom Color and Stain: Pre-Finished vs. Site Finished Floors
Customization options are the strongest argument for site finished hardwood. Because the stain is mixed and applied in your home, you can hit any color you want, sample that stain on the actual boards in your own light, and adjust before committing — which matters when you are matching a new hallway to an existing floor, restoring an older Emmett or Boise home, or chasing a tone you cannot find in a catalog. You also choose the sheen, which is how a red oak floor can read modern or traditional from the same wood. Prefinished hardwood limits you to collections a manufacturer already produces; that is still hundreds of species, widths, and stain colors, and the finish options today include wire-brushed, hand-scraped, and matte textures that look nothing like the glossy prefinished wood flooring of twenty years ago. But what you see in the sample box is what you get, and a floor that is close to your existing wood floors without being exact will read as a mismatch.
Cost: Prefinished Flooring vs. Site Finished Hardwood
Material and labor trade places between the two. Prefinished boards cost more per square foot than raw unfinished hardwood because the finishing work is already done, but installation is shorter and cheaper. Unfinished wood is less expensive to buy, then adds several days of sanding, staining, and sealing labor costs. In the Treasure Valley the two usually land within a couple of dollars per square foot of each other (see our full hardwood flooring cost breakdown), with site finished floors often edging slightly higher once labor is counted. Pre-finished hardwood flooring tends to be the better value on a straightforward installation; site finished hardwood is worth the premium when you need a custom stain on oak, a perfectly flat floor, or a seamless match into wood floors you already have. Either way, factory finished flooring and site finished flooring both hold their value better than any non-wood alternative.
Refinishing Solid Hardwood and Engineered Wear Layers
Both can be refinished, but they behave differently. Solid hardwood — prefinished or site finished — has enough wood above the tongue to sand and refinish several times over its life. Prefinished solid hardwood floors take one extra step: the aluminum oxide layer is hard enough to chew through abrasives, so the first sanding is slower and costs a little more, and the beveled edges disappear the first time you sand the floor flat. Engineered hardwood is limited by its wear layer — a thick 3–6 mm veneer can usually be refinished once or twice, a thin one cannot be refinished at all. A site finished floor is the easiest to refresh, since a light screen and a fresh coat of finish will renew the whole floor without a full sanding — here is how often hardwood floors need refinishing. Over a forty-year life, the ability to sand and refinish is why hardwood floors outlast every other flooring material in the house.
Pre-Finished Flooring vs. Site Finished Floors at a Glance
Here is how the two compare on the factors that decide most projects:
Factor | Site finished | Prefinished |
|---|---|---|
Where the finish is applied | In your home, after installation | At the factory, before delivery |
Surface | Flat, seamless, smooth finish, no bevels | Micro-beveled edges between boards |
Finish durability | Site applied finishes, 3–5 year warranty | Aluminum oxide finish, often 25+ years |
Dust and odor | Sanding dust and strong fumes during the job | Minimal dust, no finish odor |
Time to use the floor | Several days of cure time | Same day |
Color and finish options | Unlimited custom stain | Manufacturer’s collection |
Best for | Custom color, historic homes, seamless matches | Fast installation, low maintenance, hardest wear layer |
For most homeowners it comes down to personal preference and timing. Both are real wood floors, both are durable, and both will outlast carpet, laminate, and vinyl by decades with proper care — that is really all that separates them, not quality, just approach. If you want the hardest finish and the shortest project, pre finished hardwood floors are the answer. If you want a flat floor and a custom color, site finished wood floors are worth the extra days.
Get Expert Help Choosing Hardwood Floors in the Treasure Valley
Sunrise Hardwood has installed, sanded, and finished hardwood floors across Boise, Eagle, Star, Meridian, Emmett, and the wider Treasure Valley since 1998. We install 3/4″ solid factory finished flooring, engineered prefinished flooring, and traditional unfinished flooring that we sand and finish on site — so our advice is not steered by what we happen to stock. Call (208) 941‑0037 to walk your floors with us and get an honest, itemized quote for either approach.
Frequently Asked Questions
Is prefinished hardwood better than site finished hardwood?
Neither is better across the board. Prefinished hardwood flooring has a tougher factory finish, installs faster, is lower maintenance, and creates almost no dust on the floor. Site finished wood floors are flatter, have no beveled edges, and can be stained any custom color. Choose based on which trade-off matters more in your house — and on how soon you need the floor back.
Can you tell the difference between prefinished and site finished floors?
Yes, usually. Look at the seams: prefinished boards have a small groove or bevel between planks, while a site finished floor is perfectly flat and continuous. Running your hand across the wood floors is often enough to tell — pre finished flooring gives itself away at every seam.
Can pre-finished hardwood floors be sanded and refinished later?
Solid prefinished hardwood floors can be sanded and refinished several times, though the hard factory finish makes the first pass slower. Engineered pre-finished flooring depends on its wear layer — a thick veneer can be refinished once or twice, a thin one cannot.
Which is cheaper, prefinished or unfinished hardwood?
Unfinished wood costs less per square foot to buy, but adds sanding and finishing labor. Once installed, the two usually land close together, with pre finished flooring slightly cheaper on a simple, single-color installation of oak or maple. Unfinished hardwood only pulls ahead on price when the finishing work is straightforward.
